When Thomas got the news about his daughter's death, he said, "it brought me to my knees and it was definitely the worst moment of my life."
After the funeral, Thomas' sorrow gave way to confusion and finally outrage when he noticed that flowers began disappearing from her grave. For months, every memento the family left went missing.
Eventually, undercover police captured a video of Watson allegedly using bolt cutters and chopping away flowers to discard them in a nearby ditch.
"I don't know why anyone would do that," Thomas said. "I don't care who they are."
Watson owns the burial plot and refuses to allow the family to put a marker where Tina lays, Thomas said. There is no headstone to mark her grave.
"She loved life so much and she loved people so much, and I think that's why just about everybody that ever met her loved her," Thomas said.
"To us, she is an angel that's watching after us. I just tell her that I love her and I just keep telling her that I'm going to keep going until I can help her rest and be at peace."